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diff --git a/libavcodec/aacenc.c b/libavcodec/aacenc.c
index 66af2b1..16c5906 100644
--- a/libavcodec/aacenc.c
+++ b/libavcodec/aacenc.c
@@ -135,6 +135,15 @@ static const uint8_t aac_chan_configs[6][5] = {
{4, TYPE_SCE, TYPE_CPE, TYPE_CPE, TYPE_LFE}, // 6 channels - front center + stereo + back stereo + LFE
};
+static const uint8_t channel_maps[][AAC_MAX_CHANNELS] = {
+ { 0 },
+ { 0, 1 },
+ { 2, 0, 1 },
+ { 2, 0, 1, 3 },
+ { 2, 0, 1, 3, 4 },
+ { 2, 0, 1, 4, 5, 3 },
+};
+
/**
* Make AAC audio config object.
* @see 1.6.2.1 "Syntax - AudioSpecificConfig"
@@ -499,15 +508,24 @@ static int aac_encode_frame(AVCodecContext *avctx,
return 0;
if (data) {
if (!s->psypp) {
+ if (avctx->channels <= 2) {
memcpy(s->samples + 1024 * avctx->channels, data,
1024 * avctx->channels * sizeof(s->samples[0]));
+ } else {
+ for (i = 0; i < 1024; i++)
+ for (ch = 0; ch < avctx->channels; ch++)
+ s->samples[(i + 1024) * avctx->channels + ch] =
+ ((int16_t*)data)[i * avctx->channels +
+ channel_maps[avctx->channels-1][ch]];
+ }
} else {
start_ch = 0;
samples2 = s->samples + 1024 * avctx->channels;
for (i = 0; i < chan_map[0]; i++) {
tag = chan_map[i+1];
chans = tag == TYPE_CPE ? 2 : 1;
- ff_psy_preprocess(s->psypp, (uint16_t*)data + start_ch,
+ ff_psy_preprocess(s->psypp,
+ (uint16_t*)data + channel_maps[avctx->channels-1][start_ch],
samples2 + start_ch, start_ch, chans);
start_ch += chans;
}
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